/Engine/Source/Runtime/Engine/Classes/GameFramework/HUD.h
Add debug text for a specific actor to be displayed viaDrawDebugTextList(). If the debug text is invalid then it will attempt to remove any previous entries viaRemoveDebugText().
void AddDebugText ( const [FString](API\Runtime\Core\Containers\FString) & DebugText, [AActor](API\Runtime\Engine\GameFramework\AActor) * SrcActor, float Duration, FVector Offset, FVector DesiredOffset, [FColor](API\Runtime\Core\Math\FColor) TextColor, bool bSkipOverwriteCheck, bool bAbsoluteLocation, bool bKeepAttachedToActor, [UFont](API\Runtime\Engine\Engine\UFont) * InFont, float FontScale, bool bDrawShadow )